Tool post



Sept. s, 1925.

C. E. SKELTON TOOL POST Filgd July '7, 1922 v INVENTOR. W71.

ATTORNEY5 Patented Sept. 8, 1925. i 5

UNITED STATES CHARLES E. SKEL-TON, OF EAST ONONDAGA, NEW YORK.

TOOL POST.

Application filed July 7,

To all whom it may concern:

Be it known that 1, CHARLES E. SKnL'roN, a citizen of the United States, and a resident of East Onondaga, in the county of Onondaga and State of New York, have invented a certain new and useful Tool Post, of which the following is a specification.

This invention has for its object a particularly simple, efficient and durable construction of tool post or similar article by which the tool holder can be adjusted without interfering with the clamping means holding the tool post to a carriage or other support, and hence the proper cutting angle preserved and by which in boring operations the tool can be shifted to change the cutting edge in order to have a proper clearance without changing the tool holder for vertical adjustment or angular position.

The invention consists in the novel features and in the combinations and constructions hereinafter set forth and claimed.

In describing this invention, reference is had to the accompanying drawings in which like characters designate corresponding parts in all the views.

Figure 1 is a vertical sectional view of the tool post, the contiguous part of the carriage or support being shown in section.

Figure 2 is an elevation of the tool post, the carriage or support being shown in sec. tion. V

Figure 3 is an elevation of the tool post partly broken away.

Figure 4' is a plan View thereof.-

This tool post comprises generally, a post proper having means for clamping it to a carriage or other support, a tool holding body adjustable along the the post proper, and means independent of the clamping means for adjusting the tool holding body.

It also preferably includes means inclependent of the clamping and adjusting means for holding the tool holding body in itsadjusted position.

1 designates the postproper, it being here shown as a block cylindrical in general form.

The means for clamping the post proper 1 to a support as a cross feed carriage 2, as, here shown, includes a screw 3 extending axially of the post proper 1 and threading at its lower end into a T-shaped nut 4 arranged in the T slot 5 of the carriage 2, the screw having threads 6 at its lower end threading 1922. Serial No. 573,337.

left hand threads, preferably, right hand.

Hence, upon turning of the screw 3, the nut 4 is pulled upwardly fasterythan the post 1 is shifted downwardly andowing t0 the different pitch of the threads, the post is held in its clamped position without the use of lock nuts and similar devices. 1 I

9 designates the tool holdingibody which is sleeved on the post proper l and adjustable vertically thereon, it being here shown as square in cross section and having a cylindrical passage fitting the cylindrical post proper 1. I

The tool holding body is also formedwitli channels 11, 12 on opposite sides thereof for receiving the tool as 13 or 14 and with set screws 15 extending into the channels preferably from the top side thereof for engagingthe tools. Y I

The means for adjusting the tool holding body 9 vertically includes means operable from the top side of the tool post and'coactingwith the post proper and with the body 9, such means extending lengthwise of the post and the body and between surfaces of the post and the body.

In the illustrated embodiment of my in-- vention, this means comprises a screw held from endwise movement by the post proper land engaging threads on the body.

As best seen in Figs. 1 and 4, the post proper isformed with a recess 16 extending lengthwise thereof and opening throughits peripheral face, the recess being substana tially seniicylindrical, and the body 9 is formed with acomplemental semicylindrical recess 17 formed with internal threads. Also, the'post 1 is formed with bearings which are axial extensions of the recess 16. and of less diameter than the recess 16, these bearings opening through the peripheral face of the post 1 and the upper bearing also opening through the top face of the post 1.

18 is the adjusting screw, it being located in the recesses 16, 17 and meshing with the threads of the recess 17 and having axles 19 and 20 at its upper and lower ends located or lying in the bearings or extensions of the recess 16. The screw 17 at. the bases of the axles thrusts in opposite directions against the upper and lower walls of the recess 16 and is held thereby from endwise movement. The upper axle 19 is provided with a suitable socket 21 in its upper end for receiving a suitable wrench for turning the screw; 7

Obviously, as the screw is turned in one direction or the other, the tool holding body 9 will be elevated or lowered without disturbing the screw 3 which clamps the tool post 1 to the cross feed carriage.

The means for firmly holding also operable from the top side of the tool post and comprises a wedge movable bet-ween opposing surfaces of the tool post proper 1 wise movement downwardly.

and the body 9 and a'screw for shifting the wedge. 22 is the wedge which is here illustrat'ed as slidable in a recess 23 formed in one side of the tool post proper 1 and opening through the, peripheral face thereof, the recess having an inclined bottom 23 opposed tot-he opposing inner face of the 'body 9 and the wedge also having an inclined face coacting with this inclined bot- The screw threads into the wedge 22; The

head 25 is provided with a suitable socket for receiving a wrench by means of which the screw in turned. Obviously, upon turning of the screw 24 in one direction or the other, the wedge will be moved downwardly or upwardly to loosenor tighten the wedge. against the tool holding body 9.

Theheads ofthe screws 3, 19 and 24 are flush or nearly sowith the top of the post.

. Also, the heads of the tool holding screws 15 are flush with the top faces of the channel 11,12.

The tool 13 is a. cutter used-in external turning operations, and obviously, by reason of the fact that the tool holding body can be raised and lowered without shifting the tool post proper, a cha-n e of position of the tool is accomplished wit iout varying the cutting angle. V

The tool 14 is a boring bar and in boring operations, it is necessary to change the position of the cutting edge in order to have the tool holding body 9 in its adjusted position is the proper clearance.

ing bar the operator has almost unobstructed View of the work when boring.

What I claim is:

having means for clamping it to a support,

' a tool holding body adjustablevertically of the post proper, the post proper being formed with a lengthwise recess opening througlr the face opposed to the body, the recess being formed with an upright inclined bo-t tom facing the inner face of the'body, a wedge movable vertically in the recessandengaging the bottom of the recess and' the" opposing inner face of the body, and a screw extending into the recess from the top of the post proper, the screw threading into the wedge, substantially as and for the purpose specified.

2. A tool post vertically thereofhaving threadsat its lower end for threading into a clamping nut on the support forthelpost, and threads at its upper end of different pitch threading into the post, substantially as and for the purpose set forthr 4 f e I 3. A toolpost-comprising a. post proper having 3 means extending vertically there through for clamping the post to a support and operable from the top of the post, a tool holding body sleeved on the post proper, and means operable independently of the clamping 'means for adjusting the body vertically of the'tool post pro-per, the ad-' justing means being operable from the top of the tool post, substantially as and for the purpose describedp V I A. A tool post comprising a postproper having means extending vertically therethrough for clamping the post to a support, and operable from the top of the post, a tool holding body sleeved on the post proper, means operableindependently of the clamp ing means for adjusting the body vertically of the tool post proper, the adjusting means being operable from the top of the tool post,

, and means operable from the top of the post independently of the clamping and the ad-' justing means for holding the body its adjusted position, substantiallyas and for the purpose specified.

5. A tool post comprising apost proper and a screw extending vertically through the post proper and operable from the top thereof for'clamping the post to a support, a tool holding body jsleeved on the post proper, and means for adjusting the body vertically of the postproper including a screw extending vertically of the post proper and the This may be accomo plished without changing the setting of the or angular posi- 4 1. A tool post comprising a post proper having a screw extending body and operable from the top of the post, substantially as and for the purpose set forth.

6. A tool post comprising a post proper and a screw extending vertically through the post proper and operable from the top thereof for clamping the post to a support, a tool holding body sleeved on the post proper, means for adjusting the body vertically of the post proper including a screw extending vertically of the post proper and the body and operable from the top of the post, and means including a screw extending vertically of the post proper and the body for holding the body in its adjusted position, 15 substantially as and for the purpose described.

In testimony whereof, I have hereunto signed my name, at Syracuse, in the county of Onondaga and State of New York, this 20 25th day of May, 1922.

CHARLES E. SKELTON. 

